Browser based InfoPath form deployed on a Claims based Web Application calling a Secure Web Service via Data Connection

Question

hi,
We have a Browser based InfoPath Form deployed on a Claims based Web Application. We are tyring to call WCF Services that are secure using Certificates via the Data Connections on Infopath Form.
Earlier we used to get the Data in BCS External List via the WCF Services and the Data Connections used to get the Data from the BCS External List. Due to Performance Issues, we want to remove the BCS External List and straightaway call the secure WCF Services
via the Data Connections.
Have anyone implemented this scenario.
Thanks
Ram
Thanks Ram

Answer 1

Hi Ram,
As these are browser based InfoPath forms, you have two options 
1) Deploy as sandboxed forms
In this case you have to create a secure store application id and then set the credentials for that account.
You then have to export the data connection to Data connections library and modify the .udcx file to utilize the newly created secure store application id.
This may sometime give issues related to sandboxed code service. You have to give permissions on the secure store for the user account which the sandboxed code service is running.
2) Deploy as administrator approved forms
This would be ideal way of doing things as you have full control over the web request if you write code behind InfoPath forms.
3) Deploy as a Hybrid solution
a) Write a full trust proxy solutions (extend SPProxyOperation class and override execute method) and make the web request call inside this and return the response
b) Invoke above operation from the sandboxed InfoPath form's code behind by SPUtility.RegisteredProxyOperation(four part assembly name, operation args)
Hope this helps.
Thanks,
Srikanth